Officials are investigating how a girl, 14, was thrown from a ride and injured Government engineers have launched an investigation after a 14-year-old girl was thrown from a ride and injured at the Tamar World Carnival on Christmas Day. The 14-year-old claimed the operator of the Musik Express ride started the machine before she and her classmate, and her classmate's nine-year-old brother had fastened their seatbelts. They said the boy would also have been thrown off if his sister had not grabbed him. While the others escaped injury, the girl was thrown after the ride had completed about two revolutions. She was taken to Ruttonjee Hospital in Wan Chai and discharged after being treated for injuries to her shoulder and eye. Ricky Li Chung-leung, of the Electrical and Mechanical Services Department (EMSD), said yesterday that an initial investigation had not found any sign of mechanical failure and the ride had passed all previous safety tests and random inspections. But the department has not ruled out negligence or human error as a possible cause of the accident, according to Mr Li, who works in the technical secretariat. He said legal action would be considered if the operators were found to have violated safety regulations. The maximum penalty for such an offence is a $50,000 fine and two years' imprisonment. Since the carnival opened about two weeks ago, the department has received four complaints about rides, but department spokesmen did not disclose the details. The Musik Express ride, which costs $20 a turn, has been shut since the accident. The EMSD is examining the machine and a report is expected within the week, a department spokesperson said yesterday. The victim's mother took her daughter to Tseun Kwan O police station on Friday to report the incident. Officers from the Waterfront Division have taken up the case. The carnival's organisers have launched their own investigation into the accident. Last week, two people suffered leg injuries when the operator of the Wave Swinger ride failed to reduce its speed as it descended towards its platform. The operator of the ride, Robert Mariusz Brodecki, 32, pleaded guilty to failing to observe safety requirements and was fined $2,000 by a Kowloon City Court magistrate. He told the court he was only being paid Euro500 (HK$4,210) for operating the ride for the 58 days of the carnival. About 270,000 people visited the carnival from December 24 to 26, a 20 per cent increase on the same period last year, when the event was held at the Kai Tak site. On Christmas Day some visitors had to queue for about two hours before they could enter the venue.